YAMAHA NUT 6EE-G561600-00

Function and technical context

This nut is part of the structural fastening elements of Yamaha outboard motors, responsible for securing critical components of the engine block and annexed systems. Its correct tightening guarantees the mechanical integrity of the assembly, avoiding excessive vibrations and misalignments that could compromise the tightness of joints and power transmission. Failure or loosening of this fastening element can cause loss of compression, entry of water into the combustion chambers and progressive damage to bearings and connecting rods.

When to replace this part?

Although lock nuts do not wear through normal use, they should be inspected at each seasonal inspection for corrosion, deformation, or loss of torque, especially after prolonged exposure to a salt environment. It is recommended that any nut that shows signs of advanced corrosion, cracks or does not maintain the specified torque be replaced, as progressive loosening during navigation can lead to costly repairs at sea. As a preventive practice, it is advisable to check and retighten the fasteners at the beginning of each boating season.

Equivalent manufacturer part numbers